- Geological Survey professional paper, Volume 992 By Geological Survey (U.S.)
Incidentally the female was 50% the size of the male which is close to modern fur seals. Fossils are found in the North Pacific, from Baja California to Mexico.
FossilWorks gives this data on the largest species:
Thalassoleon macnallyae Repenning and Tedford 1977 (eared seal)
"thalassoleon_by_hodarinundu-d4pu5g8" above, a probably not very accurate reconstruction from Deviant Art. "Thalassoleon_mexicanusingame1" below
Admittedly the fossils are very sparse and there is only one specimen for the larger species. However it is just possible that the larger species (or one derived from it) could have survived the ice age, be alive today as the "Megotaria" (in sealion form, as we have construed it) and might have worked its way around to including also a North Atlantic population. So at this point I would like to declare that the best possibility we have suggested so far is that "Megalotaria" is only the continuing survival of the large species of Thalassoleon. That assumption could easily prove wrong for any number of reasons. But it is still the best suggestion that we have to go on at the present time.